What is the result of the statement echo strlen("hello");?

Which of the following statements best describes a union query?

A) It adds the results of a query to an existing table. B) It combines the results of two or more similar select queries. C) It displays an input box that asks for criteria each time the query is run. D) It can add, delete, or modify records in a table.

Which of the following WAN layer two protocols would be BEST suited for a full mesh topology?

A. PPP B. ATM C. MPLS D. Framerelay